package one;

import java.util.Scanner;

public class jisuanqi {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("道子");
        int a = sc.nextInt();
        String b = sc.next();
        int c = sc.nextInt();

        jisuanqi(a,b,c);




    }

    public static void jisuanqi(int x,String b,int z){
        switch (b){
            case ("+"):
                System.out.println(x+z);
                break;
            case ("-"):
                System.out.println(x-z);
                break;
            case ("*"):
                System.out.println(x*z);
                break;
            case ("/"):
                System.out.println(x/z);
                break;
        }
    }



}
